Carrier ComfortLink 30GXN - Page 37

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Table 27 — Configuring Temperature Reset
Table 28 — Return Water Reset
MODE
KEYPAD
ENTRY
SUB-MODE
KEYPAD
ENTRY
ITEM DISPLAY
ITEM
EXPANSION
COMMENT
CONFIGURATION
DISP TEST ON/OFF TEST DISPLAY LEDs
UNIT TYPE X UNIT TYPE
OPT1 FLUD X COOLER FLUID
OPT2 CTRL X CONTROL METHOD
RSET CRST X COOLING RESET TYPE 0 = No Reset
1 = 4 to 20 mA Input (EMM required)
(Connect to EMM J6-2,5)
2 = Outdoor-Air Temperature
(Connect to TB5-7,8)
3= ReturnFluid
4 = Space Temperature
(Connect to TB5-5,6)
CRT1 XXX.X F NO COOL RESET TEMP
Default: 125 F (51.7 C)
Range: 0° to125 F
Set to 4.0 for CRST= 1
No Cool Reset ∆T for CRST=3
CRT2 XXX.X F FULL COOL RESET TEMP
Default: 0° F (–17.8 C)
Range: 0° to 125 F
Set to 20.0 for CRST=1
Full Cool Reset ∆T for CRST=3
DGRC XX.X ∆F DEGREES COOL RESET
Default: 0° F (0° C)
Range: –30 to 30 F (–16.7 to 16.7 C)
SUB-MODE
KEYPAD
ENTRY
ITEM DISPLAY
ITEM
EXPANSION
COMMENT
RSET
CRST 3
COOLING RESET
TYPE
0 = no reset
1=4to20mAinput
2 = Outdoor air temp
3=ReturnFluid
4 = Space Temperature
CRT1
10.0 F
(5.5 C)
NO COOL RESET
TEMP
Default: 125 F (51.7 C)
Range: 0° to 125 F
CRT2
2.0 F
(1.1 C)
FULL COOL
RESET TEMP
Default: 0° F (–17.8 C)
Range: 0° to 125 F
DGRC
5.0 ∆F
(2.8 ∆C)
DEGREES COOL
RESET
Default: 0°F (0° C)
Range: –30 to 30 F (–16.7 to 16.7 C)
ENTER ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
LEGEND
Fig. 14 — Cooling Return Water — No Reset
EWT — Entering Water (Fluid) Temperature
LWT — Leaving Water (Fluid) Temperature
LEGEND
LWT — Leaving Water (Fluid) Temperature
Fig. 15 — Outdoor-Air Temperature Reset